1. The server looks for the class on each use, which is HIGHLY
inefficient. I would have thought that a Custom Tag would get
loaded in system scope and be optimized in various ways. (Always
loaded for example). Can this be adjusted with the tag definition
xml? I notice that the object definition provided by the custom tag
generator specifies local scope. If I changed this to system scope,
would the tag then be always loaded and persistent?
As long as the TCF is found in the first place the server looks, and is
cached in the application cache, this process should not be terribly time
consuming.
2. I'm still quite surprised to see that TCFs can only be specified
relative to an appfile (or its containing directory). I naively
assumed that a Custom Tag could be saved in /usr/local/witango so it
could be available to all appfiles.
Anyway, if a custom tag is slower and can't be globally available, it
looks like it might be more trouble than just including the method in
one of my persistent class files. Any thoughts or suggestions?
Well, the custom tag is universally available to the whole server, however
since it needs to find a TCF to support its function, its possible that the
TCF would only be available to one particular website. From the perspective
of a multi-client host, such as myself, this makes sense. Still, I've been
able to add truly universal custom tags for the benefit of all my clients
for functions similar to yours: I developed @ISSMALLDATETIME which qualifies
a date or timestamp to be valid for MS SQL's smalldatetime column type.
Beyond a handful of easy to implement functions like that, custom tags
aren't particularly useful. Then again, TCFs are no more efficient than TAFs
either, but if using them can save the programmer time, then they are likely
worth it.
Robert
Bill
William M. Conlon, P.E., Ph.D.
To the Point
345 California Avenue Suite 2
Palo Alto, CA 94306
vox: 650.327.2175 (direct)
fax: 650.329.8335
mobile: 650.906.9929
e-mail: mailto:[EMAIL PROTECTED]
web: http://www.tothept.com
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